Closure.



H. E. TOWNSEND.

CLOSURE msn , APPLlcAT n. 2. |915. ,v 1,1 59,624. Patented Nov. 91915.

By* v i Z; ArramvErAv 4 y liu'r oFFIoE.

HARRY E. TOWNSENI'), OF BROOKLYN, NEW YGRK, ASSIGNOR TO ANCHOR CAP 'z: CLOSURE CORPORATION, GF BROGKLYN, NElW YORK, A. CGRPORATION 0F NEW YORK.

CLOSURE.

,application filed March 2,

To all whom it Im ay concern Be it known that l, HARRY E. TowNsnND, a citizen of the United States, residing at Brooklyn, in the county ot' Kings and State of New York, have invented new and useful Improvements in'Closures, ot which the tollowing is a specification.

lrEhis invention relates to sealing closures adapted to he applied to glass containers and the lilre and has particular reference to the type of closure in which the seal is ef- Jected against the side wall of the container by compression or' a `gasket so that the gasket is squeezed laterally against the container wall.

The objects of invention "are to provide a closure of such a form that the operation ot' sealing will not injure the lacquer skin upon the closureg' that will require a minimum amount of power in the sealing operation; that will reduce the breakage of `lass containers; that will providea more ei'l'ect-ive and more permanent seal; that will give a greater latitude in the allowable sizes of glass containers that may he used with the closure, and still other ohjects will appear in the following description and claims.

Referring to the drawings: Figure 1 is an elevation showing` the closure applied to a. glass container such as a tumbler; Fig. :2 is a sectional elevation ot a partoi' the closure and sealing jaws as they appear beiore the sealing' operation; Fig'. 3 is a similar view showing the closure as'applied to a container ot relatively large size; F 4 is a.

1 similar view showing' the closure as applied to a container of normal size; and' Fig. 5 is a similar view showing the closure as applied to a container of relatively small size'.

The glass container is shown at 10. The cap 11 is provided usually with a depending flange 12 which may he made of .varying depth as desired, and it also has an annular heading indicated at 13, 14 which incloses a gasket l5 or rubber or other suitable composition.

The sealing jaws are indicated at 1G and 17 and thesealinb` is effected by a relative movement or' the jaws toward each other, whereby the 15 is compressed in a vertical direction andilows rlaterally under this pressure into a sealing contact with the container wall. i machine equipped with jaws operating in the manner described is Specification et' Letters Patent.

Patented Nov. 9, 1915. i915. semaine. 11,595.

disclosed in patent to J. V. 874,201, December 17, v1907 .l

By the present invention, the beading of the closure is :formed with curved surfaces. As shown'in Figs. 3, e and 5, the upper wall 13 is vformed with a concave annular surface, while the outer and lower sections of the beading are in the form ot a single convez: wall 14. The two parts 13 and 14 of thev heading form a cross-sectional area. loetween them in the form of a horn, the crosssectional area of the horn increasing from its tip 18 .radially inward.

By forming the beading with curved' surfaces, the metal flows more easily under pressure of the sealing dies, the pressure of the dies is more evenly distributed, and there is less bruising or breaking of the lacquer skin. Less power is also required to operate the dies, and as the sealing pressure usually required with these forms of clo- Hau, No.

sures runs into thousands of pounds, a consnlerahle saving of power 1s made and there is less wear upon thev sealing machinery.

lilith the improved type of closure having the horn-shaped cross-section, a greater amount ot the `gasket material isutilized in making' the seal and a greater area of sealf ing contact with the container Wallis secured, increasing; the effectiveness and permanency oi" the seal. A further advantage ot the horn-shaped crosssection is that containers of widely varying sizes may be effectively sealed hy the saine size of closure.

Closures of the side sealing type are made in set sizes and the greatest allowable variation of the glass container is `a maximum or minimum variation of of a milimeter from the size of the closure. Withthe improved type of closure owing to the horn-shaped cross-section of the beading, the permissiblelimits of the containers may be extended 100 per cent., so that breakage on oversize glass is greatly reduced, and effective seals are secured on glass that is under-size.

Fig'. 3 shows the form of the horn when the closure is applied to a container of. large size, while Fig. 5 shows the form of the horn when the same sized closure is applied Fig. 5, the entire outer 'svrngh or ,only slightly @www7 Whe Wall has fAN curve@ convax form.

l claim:

l. A closure provided with :V1 beadng und ay gasket held under comp sion between opposing; Walls of bhe bem?. A j wlf -as-LC-Qf 121i il u' portion of Said gasket @muy under Said comprfessfm 19 E "MLB of the' container, the smi.l nel .l Y f -fg "normshaped cloSs-saction. niu'as 1^ Wm'dly.

cosure provided m9; anfl ay gasket helm.

Y und me@ oi me i fatally 

